Effects of turbulence, resistivity and boundary conditions on helicoidal flow collimation: consequences for the Von-Kármán-Sodium dynamo experiment

  title={Effects of turbulence, resistivity and boundary conditions on helicoidal flow collimation: consequences for the Von-K{\'a}rm{\'a}n-Sodium dynamo experiment},
  author={Jacobo Varela and S. Brun and B{\'e}reng{\`e}re Dubrulle and Caroline Nore},
  journal={Physics of Plasmas},
We present hydrodynamic and magneto-hydrodynamic simulations of a liquid sodium flow using the compressible MHD code PLUTO to investigate the magnetic field regeneration in the Von-Karman-Sodium dynamo experiment. The aim of the study is to analyze the influence of the fluid resistivity and turbulence level on the collimation by helicoidal motions of a remnant magnetic field. We use a simplified Cartesian geometry to represent the flow dynamics in the vicinity of one cavity of a multi-blades… 

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